Apple is rumored to be adding NFC support to the iPhone at some point in the future, but here's a way you can add wireless payments to your iPhone right now. You don't have to solder an NFC chipset, install any applications or even apply a sticker, all you have to do is pop off the back of the iPhone and stick an NFC payment card inside. The procedure is detailed over at Unplggd and it seems easy, once you overcome the fear of cracking the glass back of your iPhone.